380 lines
9.6 KiB
C
380 lines
9.6 KiB
C
/*
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* Copyright (C) 2013 Red Hat
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* Author: Rob Clark <robdclark@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "hdmi.h"
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void hdmi_set_mode(struct hdmi *hdmi, bool power_on)
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{
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uint32_t ctrl = 0;
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if (power_on) {
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ctrl |= HDMI_CTRL_ENABLE;
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if (!hdmi->hdmi_mode) {
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ctrl |= HDMI_CTRL_HDMI;
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hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
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ctrl &= ~HDMI_CTRL_HDMI;
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} else {
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ctrl |= HDMI_CTRL_HDMI;
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}
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} else {
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ctrl = HDMI_CTRL_HDMI;
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}
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hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
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DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
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power_on ? "Enable" : "Disable", ctrl);
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}
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irqreturn_t hdmi_irq(int irq, void *dev_id)
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{
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struct hdmi *hdmi = dev_id;
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/* Process HPD: */
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hdmi_connector_irq(hdmi->connector);
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/* Process DDC: */
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hdmi_i2c_irq(hdmi->i2c);
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/* TODO audio.. */
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return IRQ_HANDLED;
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}
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void hdmi_destroy(struct kref *kref)
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{
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struct hdmi *hdmi = container_of(kref, struct hdmi, refcount);
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struct hdmi_phy *phy = hdmi->phy;
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if (phy)
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phy->funcs->destroy(phy);
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if (hdmi->i2c)
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hdmi_i2c_destroy(hdmi->i2c);
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platform_set_drvdata(hdmi->pdev, NULL);
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}
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/* initialize connector */
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struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
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{
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struct hdmi *hdmi = NULL;
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struct msm_drm_private *priv = dev->dev_private;
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struct platform_device *pdev = priv->hdmi_pdev;
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struct hdmi_platform_config *config;
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int i, ret;
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if (!pdev) {
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dev_err(dev->dev, "no hdmi device\n");
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ret = -ENXIO;
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goto fail;
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}
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config = pdev->dev.platform_data;
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hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
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if (!hdmi) {
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ret = -ENOMEM;
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goto fail;
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}
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kref_init(&hdmi->refcount);
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hdmi->dev = dev;
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hdmi->pdev = pdev;
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hdmi->config = config;
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hdmi->encoder = encoder;
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hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
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/* not sure about which phy maps to which msm.. probably I miss some */
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if (config->phy_init)
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hdmi->phy = config->phy_init(hdmi);
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else
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hdmi->phy = ERR_PTR(-ENXIO);
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if (IS_ERR(hdmi->phy)) {
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ret = PTR_ERR(hdmi->phy);
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dev_err(dev->dev, "failed to load phy: %d\n", ret);
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hdmi->phy = NULL;
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goto fail;
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}
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hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
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if (IS_ERR(hdmi->mmio)) {
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ret = PTR_ERR(hdmi->mmio);
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goto fail;
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}
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BUG_ON(config->hpd_reg_cnt > ARRAY_SIZE(hdmi->hpd_regs));
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for (i = 0; i < config->hpd_reg_cnt; i++) {
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struct regulator *reg;
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reg = devm_regulator_get(&pdev->dev,
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config->hpd_reg_names[i]);
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if (IS_ERR(reg)) {
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ret = PTR_ERR(reg);
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dev_err(dev->dev, "failed to get hpd regulator: %s (%d)\n",
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config->hpd_reg_names[i], ret);
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goto fail;
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}
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hdmi->hpd_regs[i] = reg;
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}
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BUG_ON(config->pwr_reg_cnt > ARRAY_SIZE(hdmi->pwr_regs));
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for (i = 0; i < config->pwr_reg_cnt; i++) {
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struct regulator *reg;
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reg = devm_regulator_get(&pdev->dev,
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config->pwr_reg_names[i]);
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if (IS_ERR(reg)) {
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ret = PTR_ERR(reg);
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dev_err(dev->dev, "failed to get pwr regulator: %s (%d)\n",
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config->pwr_reg_names[i], ret);
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goto fail;
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}
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hdmi->pwr_regs[i] = reg;
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}
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BUG_ON(config->hpd_clk_cnt > ARRAY_SIZE(hdmi->hpd_clks));
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for (i = 0; i < config->hpd_clk_cnt; i++) {
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struct clk *clk;
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clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]);
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if (IS_ERR(clk)) {
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ret = PTR_ERR(clk);
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dev_err(dev->dev, "failed to get hpd clk: %s (%d)\n",
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config->hpd_clk_names[i], ret);
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goto fail;
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}
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hdmi->hpd_clks[i] = clk;
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}
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BUG_ON(config->pwr_clk_cnt > ARRAY_SIZE(hdmi->pwr_clks));
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for (i = 0; i < config->pwr_clk_cnt; i++) {
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struct clk *clk;
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clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]);
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if (IS_ERR(clk)) {
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ret = PTR_ERR(clk);
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dev_err(dev->dev, "failed to get pwr clk: %s (%d)\n",
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config->pwr_clk_names[i], ret);
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goto fail;
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}
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hdmi->pwr_clks[i] = clk;
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}
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hdmi->i2c = hdmi_i2c_init(hdmi);
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if (IS_ERR(hdmi->i2c)) {
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ret = PTR_ERR(hdmi->i2c);
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dev_err(dev->dev, "failed to get i2c: %d\n", ret);
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hdmi->i2c = NULL;
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goto fail;
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}
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hdmi->bridge = hdmi_bridge_init(hdmi);
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if (IS_ERR(hdmi->bridge)) {
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ret = PTR_ERR(hdmi->bridge);
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dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret);
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hdmi->bridge = NULL;
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goto fail;
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}
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hdmi->connector = hdmi_connector_init(hdmi);
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if (IS_ERR(hdmi->connector)) {
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ret = PTR_ERR(hdmi->connector);
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dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret);
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hdmi->connector = NULL;
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goto fail;
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}
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if (!config->shared_irq) {
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hdmi->irq = platform_get_irq(pdev, 0);
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if (hdmi->irq < 0) {
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ret = hdmi->irq;
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dev_err(dev->dev, "failed to get irq: %d\n", ret);
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goto fail;
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}
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ret = devm_request_threaded_irq(&pdev->dev, hdmi->irq,
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NULL, hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
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"hdmi_isr", hdmi);
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if (ret < 0) {
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dev_err(dev->dev, "failed to request IRQ%u: %d\n",
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hdmi->irq, ret);
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goto fail;
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}
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}
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encoder->bridge = hdmi->bridge;
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priv->bridges[priv->num_bridges++] = hdmi->bridge;
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priv->connectors[priv->num_connectors++] = hdmi->connector;
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platform_set_drvdata(pdev, hdmi);
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return hdmi;
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fail:
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if (hdmi) {
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/* bridge/connector are normally destroyed by drm: */
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if (hdmi->bridge)
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hdmi->bridge->funcs->destroy(hdmi->bridge);
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if (hdmi->connector)
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hdmi->connector->funcs->destroy(hdmi->connector);
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hdmi_destroy(&hdmi->refcount);
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}
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return ERR_PTR(ret);
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}
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/*
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* The hdmi device:
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*/
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#include <linux/of_gpio.h>
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static void set_hdmi_pdev(struct drm_device *dev,
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struct platform_device *pdev)
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{
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struct msm_drm_private *priv = dev->dev_private;
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priv->hdmi_pdev = pdev;
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}
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#ifdef CONFIG_OF
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static int get_gpio(struct device *dev, struct device_node *of_node, const char *name)
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{
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int gpio = of_get_named_gpio(of_node, name, 0);
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if (gpio < 0) {
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char name2[32];
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snprintf(name2, sizeof(name2), "%s-gpio", name);
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gpio = of_get_named_gpio(of_node, name2, 0);
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if (gpio < 0) {
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dev_err(dev, "failed to get gpio: %s (%d)\n",
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name, gpio);
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gpio = -1;
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}
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}
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return gpio;
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}
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#endif
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static int hdmi_bind(struct device *dev, struct device *master, void *data)
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{
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static struct hdmi_platform_config config = {};
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#ifdef CONFIG_OF
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struct device_node *of_node = dev->of_node;
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if (of_device_is_compatible(of_node, "qcom,hdmi-tx-8074")) {
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static const char *hpd_reg_names[] = {"hpd-gdsc", "hpd-5v"};
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static const char *pwr_reg_names[] = {"core-vdda", "core-vcc"};
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static const char *hpd_clk_names[] = {"iface_clk", "core_clk", "mdp_core_clk"};
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static unsigned long hpd_clk_freq[] = {0, 19200000, 0};
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static const char *pwr_clk_names[] = {"extp_clk", "alt_iface_clk"};
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config.phy_init = hdmi_phy_8x74_init;
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config.hpd_reg_names = hpd_reg_names;
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config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
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config.pwr_reg_names = pwr_reg_names;
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config.pwr_reg_cnt = ARRAY_SIZE(pwr_reg_names);
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config.hpd_clk_names = hpd_clk_names;
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config.hpd_freq = hpd_clk_freq;
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config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
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config.pwr_clk_names = pwr_clk_names;
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config.pwr_clk_cnt = ARRAY_SIZE(pwr_clk_names);
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config.shared_irq = true;
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} else if (of_device_is_compatible(of_node, "qcom,hdmi-tx-8960")) {
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static const char *hpd_clk_names[] = {"core_clk", "master_iface_clk", "slave_iface_clk"};
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static const char *hpd_reg_names[] = {"core-vdda", "hdmi-mux"};
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config.phy_init = hdmi_phy_8960_init;
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config.hpd_reg_names = hpd_reg_names;
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config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
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config.hpd_clk_names = hpd_clk_names;
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config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
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} else if (of_device_is_compatible(of_node, "qcom,hdmi-tx-8660")) {
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config.phy_init = hdmi_phy_8x60_init;
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} else {
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dev_err(dev, "unknown phy: %s\n", of_node->name);
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}
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config.mmio_name = "core_physical";
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config.ddc_clk_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-clk");
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config.ddc_data_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-data");
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config.hpd_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-hpd");
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config.mux_en_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-en");
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config.mux_sel_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-sel");
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config.mux_lpm_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-lpm");
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#else
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static const char *hpd_clk_names[] = {
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"core_clk", "master_iface_clk", "slave_iface_clk",
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};
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#endif
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dev->platform_data = &config;
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set_hdmi_pdev(dev_get_drvdata(master), to_platform_device(dev));
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return 0;
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}
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static void hdmi_unbind(struct device *dev, struct device *master,
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void *data)
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{
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set_hdmi_pdev(dev_get_drvdata(master), NULL);
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}
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static const struct component_ops hdmi_ops = {
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.bind = hdmi_bind,
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.unbind = hdmi_unbind,
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};
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static int hdmi_dev_probe(struct platform_device *pdev)
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{
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return component_add(&pdev->dev, &hdmi_ops);
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}
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static int hdmi_dev_remove(struct platform_device *pdev)
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{
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component_del(&pdev->dev, &hdmi_ops);
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return 0;
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}
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static const struct of_device_id dt_match[] = {
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{ .compatible = "qcom,hdmi-tx-8074" },
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{ .compatible = "qcom,hdmi-tx-8960" },
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{ .compatible = "qcom,hdmi-tx-8660" },
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{}
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};
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static struct platform_driver hdmi_driver = {
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.probe = hdmi_dev_probe,
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.remove = hdmi_dev_remove,
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.driver = {
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.name = "hdmi_msm",
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.of_match_table = dt_match,
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},
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};
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void __init hdmi_register(void)
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{
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platform_driver_register(&hdmi_driver);
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}
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void __exit hdmi_unregister(void)
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{
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platform_driver_unregister(&hdmi_driver);
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}
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